February 2022
Installation, Operation and Maintenance Manual
VCIOM-15345-EN Rev. 1
32
Start-up Procedure
Section 4: Start-up Procedure
4.9.3
Toggle the OPEN/CLOSE Selector Knob to stroke the actuator to the fail-safe
position. A 2-way N.C. Solenoid Valve energizes venting the fluid in the Power
Cylinder to the Reservoir. At the full fail-safe position, the closing solenoid will
automatically de-energize.
4.9.4
The Spring-Return Module will stroke the actuator to the fail-safe position.
4.9.5
Check all hydraulic lines and fittings for leakage, repair as needed.
4.9.6
Toggle the OPEN/CLOSE Selector Knob to Power Stroke the actuator. If equipped
with an accumulator, fluid will be discharged into the hydraulic cylinder to stroke
the actuator. If not equipped with an accumulator, the motor will start and pump
fluid into the hydraulic cylinder to stroke the actuator. The actuator travels to the
fully Power Stroked position.
4.9.7
Toggle the OPEN/CLOSE Selector Knob to return the actuator to its fail-safe position.
4.9.8
Cycle the actuator open and closed a few times to ensure operation.
4.9.9
While the motor is running, toggle the Selector Knob to STOP. The motor and
actuator will stop. When the Selector Knob is in STOP position, the accumulator
does not charge even if it goes below the charging pressure.
4.9.10
Toggle the OPEN/CLOSE Selector Knob to fully Power Stroke the actuator.
4.9.11
Return the actuator to its original position.
4.9.12
Turn the LOCAL/OFF/REMOTE Selector Switch to REMOTE.
4.9.13
Rotate the OPEN/CLOSE Selector Knob to OPEN Position. The Actuator must
remain at rest.
4.9.14
Turn the LOCAL/OFF/REMOTE Selector Switch to LOCAL. Rotate the OPEN/CLOSE
Selector Switch to CLOSE and OPEN Positions to ensure control returned to the
LOCAL Control Mode.
4.9.15
The functional test of the Electro Hydraulic Actuator is now complete.
The Biffi EHO Actuator is now operational and ready for service.
4.10
Other Options
Other options such as Solar Panels and Battery Packs may have been supplied with this
order. Refer to supplemental start-up procedures supplied with these options for start-up
and test.
